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CVE-2018-12369

Estado: ModificadaCrítica (9.8)—

Las WebExtensions incluidas con los experimentos embebidos no se comprobaron correctamente en busca de una autorización adecuada. Esto permitía que una WebExtension maliciosa obtenga los permisos totales del navegador. La vulnerabilidad afecta a Firefox ESR en versiones anteriores a la 60.1 y Firefox en versiones anteriores a la 61.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

Canonical — Ubuntu LinuxMozilla — Firefox

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2018-12369",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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          "version": "3.0",
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          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security@mozilla.org",
      "affectedData": [
        {
          "vendor": "Mozilla",
          "product": "Firefox ESR",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "60.1",
              "versionType": "custom"
            }
          ]
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          "product": "Firefox",
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  "published": "2018-10-18T13:29:03.663",
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      "source": "security@mozilla.org"
    },
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1454909",
      "tags": [
        "Issue Tracking",
        "Permissions Required",
        "Vendor Advisory"
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      "source": "security@mozilla.org"
    },
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "WebExtensions bundled with embedded experiments were not correctly checked for proper authorization. This allowed a malicious WebExtension to gain full browser permissions. This vulnerability affects Firefox ESR < 60.1 and Firefox < 61."
    },
    {
      "lang": "es",
      "value": "Las WebExtensions incluidas con los experimentos embebidos no se comprobaron correctamente en busca de una autorización adecuada. Esto permitía que una WebExtension maliciosa obtenga los permisos totales del navegador. La vulnerabilidad afecta a Firefox ESR en versiones anteriores a la 60.1 y Firefox en versiones anteriores a la 61."
    }
  ],
  "lastModified": "2026-06-17T01:37:38.347",
  "configurations": [
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